1 · 短语套短语
from reading this book
介词短语 → 动名词短语
2 · 短语套从句(从属连词)
to know that he will come
不定式短语 → 宾语从句(从属连词 that 引导)
3 · 短语套从句(关系代词定语)
reading the book which Tom gave him
动名词短语 → 定语从句(关系代词 which 引导)
4 · 短语套从句(关系代词宾语)
reading what Tom suggested
动名词短语 → 宾语从句(关系代词 what 引导)